We suppose that one user can check 10 passwords per second and an organization with a budget of about $1 billion can check 10 billion passwords per second. We also suppose that the processor in use doubles its performance every two years; so, each additional Latin letter of a long password adds about 9 years to an exhaustive key search attack.
中文帮助文档貌似和英文的有不少出入,billion被翻译为兆.
查了下,billion在很多西方国家是兆,除了在美国与科学用语方面.
有10亿人联合破解他的密码,这个人一定欠了很多人很多钱.